Charles herman freyer



UNITED STATES PATENT OFFICE.

CHARLES HERMAN FREYER, OE LONDON, ENGLAND.

SPECIFICATION forming part of Letters Patent No. 516,703, dated March 20, 1.894. Application led March 27, 1893. Serial No. 467,778. (No model.) Patented in England November 2, 1892, No. 19,745.

To wZZ whom t may oon/cern.-

Be it known that I, CHARLES HERMAN FREY- ER, a subject of the Queen of Great Britain, and a resident of London, England, have invented certain new and useful Im proveniente in Oil-Purifying Apparatus, for which I have applied for a patent in Great Britain, No. 19,745, dated November 2, 1892,) of which the following is a full, clear, and exact specification.

This invention relates to an improved apparatus for filtering and purifying oil, in which the oil percolates from a reservoir through filtering material and the sediment and water which separate during the process are collected in a receptacle from which they may be discharged.

Referring to the annexed drawing the ligure is a sectional side elevation of my improved oil lter.

This filter is particularly useful in purifying oil which has been used for lubricating machinery and afterward collected.

a is an outer casing supporting the receptacle b, having a lid o. This receptacle communicates with a double walled chamber d--e, having perforations f, and g, between the walls of which the filtering material such as cotton wool h is placed. l

t' is a cap which is secured in position by means of a thumb screw j and screw peg la, the peg lo being attached to the inner wall oZ by plate d.

Z is a cup attached to the rod m for enablingy same to be withdrawn; the cup Z being for the purpose of collecting any sediment which may settle from the oil and also any water.

n is a cup filled with filtering material o, such as cotton wool and provided with the handle jp, for removing the same. The bottom of this cup n is perforated.

q is a tank having perforations r; this tank q also collects any sediments or water not eliminated by the double walled chambe oZ-e.

The filtering material h is surrounded by a layer of filtering paper t, the ends of which are turned over and secured by the rim of the cap o' against the filtering material h.

' u are padlocks for retaining the receptacle b, and double walled chamber (1 -e, to which it is attached in position.

The action is as follows. The oil to be purified is poured into the receptacle b; it then percolates through the filtering material o in the cup ln., then through the filtering material h, and into the tank q, through the perforations fr and finally to the withdrawal cock s; the course of the oil being indicated by the arrows. .The sediment and water settle to the bottom of the cup Z and tank q owing to their greater specific gravity. y With this description of myinvention,what I claim, and desire to secure by Letters Patent, is

In apparatus for filtering and purifying oil,

in combination, an outer casing, a receptacle and perforated double walled chamber, provided with filtering material, and supported f by said outer casing, a cap, screw peg and thumbscrew for retaining the filtering material in position two cups, provided with handles one cup having filtering material andA perforated bottom and placed at the top of CHARLES HERMAN FREYER.

Witnesses:

JAMES FLEMING, S. CRANsoN. 

